#5170DD#5170DD

#5170DD is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.9% C 0.170 H 268.7°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#5170DD
RGB	rgb(81, 112, 221)
HSL	hsl(227, 67%, 59%)
HSV	hsv(227, 63%, 87%)
CMYK	cmyk(63.3%, 49.3%, 0%, 13.3%)
CIE-LAB	lab(50.16, 22.89, -59.20)
CIE-LCH	lch(50.16, 63.47, 291.14°)
OKLab	oklab(57.88% -0.0039 -0.1696)
OKLCH	oklch(57.88% 0.17 268.7)
XYZ	xyz(22.2342, 18.5561, 70.8026)
Luminance	0.1856 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5170DD #DDBE51

analogous

#51B6DD #5170DD #7851DD

triadic

#5170DD #DD5170 #70DD51

tetradic

#5170DD #DD51B6 #DDBE51 #51DD78

square

#5170DD #DD51B6 #DDBE51 #51DD78

split-complementary

#5170DD #DD7851 #B6DD51

monochromatic

#1D3896 #274BC9 #5170DD #849AE7 #B7C4F1

Accessibility & contrast

On white

4.46

#5170DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#5170DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5170DD

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5170DD	#FFFFFF	#000000	##000000
##5170DD	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#347EE1

Deuteranopia (green-blind)

#0F71DB

Tritanopia (blue-blind)

#00899C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #5170dd;
/* rgb */ color: rgb(81, 112, 221);
/* oklch */ color: oklch(57.9% 0.170 268.7);

Tailwind

colors: {
  custom: {
    50: '#8f98e8',
    500: '#5170dd',
    950: '#000000',
  },
}

SCSS

$custom: #5170dd;
$custom-light: #8f98e8;
$custom-dark: #000000;

JSON

{
  "hex": "#5170dd",
  "rgb": {
    "r": 81,
    "g": 112,
    "b": 221
  },
  "hsl": {
    "h": 226.714,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.57877,
    "c": 0.16963,
    "h": 268.7
  },
  "luminance": 0.18558
}

Semantic roles & 50–950 ramp

primary

#5170DD

secondary

#E0D4AA

accent

#C43EEA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #5170DD

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →